Snowflake Diameter and Fall Speed Data from Canadian Winter Campaign

December 2006 to April 2007 data contains measurements of individual snowflakes, including diameter, volume, and fall speed, collected by a Two-Dimensional Video Disdrometer (2DVD) in Ontario, Canada. The dataset was created by the GHRC DAAC as part of the Canadian CloudSat/CALIPSO Validation Project (C3VP) to support NASA's GPM mission and improve winter precipitation modeling and remote sensing.

Use Cases

• Validating satellite-based snowfall rate estimates from GPM and CloudSat using ground-measured particle size and fall speed.
• Analyzing relationships between snowflake diameter, volume, and velocity to improve microphysical parameterizations in weather models.
• Studying the statistical distribution of snowflake characteristics during a winter season in a continental climate.
• Comparing ground-based disdrometer measurements with other in-situ instruments deployed during the C3VP field campaign.

Strengths

• Provides detailed, individual snowflake measurements (diameter, volume, fall speed) rather than bulk averages.
• Covers a full winter season from December 2,我们发现2006 to April 9, 2007.
• Serves as a key validation dataset for multiple satellite missions (GPM, CloudSat, CALIPSO).
• Hosted on multiple authoritative platforms (NASA Earthdata, Data.gov), indicating established importance.

Limitations

• Specific column names and the total row count are not provided by any source.
• Sources conflict on the license (specified as 'other-license-specified' on two platforms vs. 'None' on another) and the last updated date (2026 vs. 2007).
• Data is limited to a single instrument location at the CARE facility in Ontario.

Provenance

Source

GHRC DAAC (Global Hydrology Resource Center Distributed Active Archive Center).

Collection Method

Data collected by a single Two-Dimensional Video Disdrometer (2DVD) instrument during the C3VP field campaign.

Time Range

2006-12-02 to 2007-04-09

Freshness

2026-03-13 02:19:09.983276

Geography

Centre for Atmospheric Research Experiments (CARE) facility, Ontario, Canada.